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UNITED STATES PATENT OFFICE.

JOSEPH A. DIETZ, OF ST. MARYS, PENNSYLVANIA, ASSIGNOR OF ON E-HALF TOERNEST J. WIMMER, OF SAME PLACE.

PROCESS OF MAKING LEATHER WATER-PROOF.

2.?EQIFICATION forming part of Letters Patent No. 334,518, dated January19, 1886.

Application filed December 29, 1884. Serial No. 151,517. (No specimens.)

To all whom it may concern.- Be it known that I, JOSEPH A. DIETZ, acitizen of the United States of America, residing at St. Marys, in thecounty of Elk and State of Pennsylvania, have invented a new and usefulcomposition of matter to be used upon tanned sole-leather,upper'leather, calfskin, and all other kinds of leather, and method ofapplying the same, for the purpose of making said leathers water-proof,and also more pliable and durable, of which the following is aspecification.

My composition consists of the followingingredients combined in theproportions stated I 5 and used as stated, viz: Cold water; Soak theleather therein thoroughly. After the leather is half-dry apply thefollowing with asponge: sugar of lead, one ounce; hot water, one gallon.Then next apply the following with a difierent sponge: alum, (commonpotashalum,) two pounds; hot water, two gallons. These amounts willsuffice for half a dozen hides. Said ingredients (sugar of lead andhot'water) are to be thoroughly mixed by agitation, as also are the alumand hot water.

In using the above-named composition the hides should be first wellscoured and halfdried. The solutions must be applied upon both sides ofthe hides, and can be applied immediately to rough hides (half-dried) orafter the hides are finished.

I am aware that compositions exist upon which Letters Patent have beenissued and granted, which are used for thesame purpose, viz: N 0.131,563, to RV. Roudiez on Septem- 5 her 24, 1872, and No. 250,874, toValentine Belikan on December 13, 1881; but I am not aware that all oftheingredients of my composition, in the proportions stated, have beenused as above stated and applied, as stated 0 herein.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is

l. The within method of treatingleather and hides and the like to renderthem water-repel- 4 5 lent and pliable, consisting in applying waterthereto, then partially drying the same, then applying a solution ofsugar of lead and hot water, and subsequently applying a solution ofalum and hot water, substantially as described.

2. The within compound for treating leather and hides and the like torender them waterrepellent and pliable, composed of two solutions, onebeing hot water one gallon and sugar of lead one ounce, and the otherhot Water two gallons and alum two pounds, to be used in the ordernamed, substantiallyas described.

JOSEPH A. DIETZ.

